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【单选题】
内旋转单键数目增多,内旋转阻力(),构象数( )A.
变大， 变大
B.
减小，变大
C.
变大，减小
D.
减小，减小
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【简答题】Father’s Day is the third Sunday in June. It is a day to thank fathers. On that day, fathers usually receive greeting gifts and cards. On the cards, children will write, “Thanks, father.” “Best wishes...
【单选题】The girl s father is in hospital, so she has to______him day and night.
A.
deal with
B.
attend to
C.
look into
D.
part with
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